Vitrified Bond is the most widely used bond. It has high porosity and strength which makes this type of wheel suitable for high rate of stock removal. It is not adversely affected by water, acid, oils or ordinary temperature conditions.
85) Which one of the following bonds is most commonly used on grinding wheels ?
Related Cutting Tools MCQ - Machinist(Set-1) with Answers
Artificial abrasives are silicon carbide and aluminium oxide.
Silicon carbide is denoted with "C"
Aluminium oxide is denoted with "A"
As per Indian Standards the grain size 46 comes under the group "Medium"
As per Indian Standards the 'M' grade of grinding wheel comes under the group Medium.
The term grade as applied to a grinding wheel refers to the tenacity with which the bond holds the abrasive grains in place, and does not refer to the hardness of the abrasive.
A wheel from which the grains are released rapidly during the grinding operation is called soft grade, whereas wheel that retains the grains more securely is called hard grade
Resinoid bond is used for speed wheels. Such wheels are used in foundries for dressing castings. Resinoid bond wheels are also used for cutting off. They are strong enough to withstand considerable abuse.
Resinoid Bond is denoted with symbol "B".